CN107284431B - Active three-safety-redundancy high-thrust electronic power-assisted brake actuator - Google Patents
Active three-safety-redundancy high-thrust electronic power-assisted brake actuator Download PDFInfo
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- CN107284431B CN107284431B CN201710540336.0A CN201710540336A CN107284431B CN 107284431 B CN107284431 B CN 107284431B CN 201710540336 A CN201710540336 A CN 201710540336A CN 107284431 B CN107284431 B CN 107284431B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T13/00—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems
- B60T13/74—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with electrical assistance or drive
- B60T13/745—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with electrical assistance or drive acting on a hydraulic system, e.g. a master cylinder
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Abstract
The invention discloses an active three-safety-margin high-thrust electronic power-assisted brake actuator which comprises a manpower mechanical action part, a motor action part and a manpower direct action part. A three-safety-margin electronic power-assisted brake actuator main mechanism comprises: a ball and screw nut, a parallel shaft train, a planetary train, a trapezoidal lead screw and trapezoidal screw nut, a motor, its characterized in that: the lever ratio and the planetary reduction ratio are utilized to amplify manpower, so that mechanical self-locking can be realized; the large thrust effect can be realized, and the action times of the motor are reduced; three safety margins are provided, namely mechanical action brake realized by manpower through a mechanical structure, active brake realized by a motor, and brake failure backup realized by manpower directly; the structure can receive satellite signals and sensor signals to perform emergency braking.
Description
Technical Field
The invention relates to the field of automobile braking, in particular to an active three-safety-margin high-thrust electronic power-assisted brake actuator for a vehicle braking system.
Background
Conventional brake systems have become a well established art, but there are some problems with such systems: for example, the volume of the vacuum booster is large, the boosting size is not controllable, and the connection between the brake and the manual operation cannot be cut off.
The research focus of the present vehicle brake systems is mainly the brake-by-wire system, which is divided into an electro-hydraulic brake system and an electro-mechanical brake system. The EMB cancels a traditional hydraulic brake pipeline and has the characteristics of quick response and simple structure. However, the EMB system uses a large number of electronic components, and thus the backup is too complicated when the EMB system fails in braking. The present invention does not take the form of an EMB, but rather takes the mode of an electro-hydraulic brake system.
The patents close to the present invention are summarized: the wire control brake system for the electric vehicle is disclosed as CN201410323183, a planetary gear train is adopted for speed reduction and torque increase, and then the ball screw is used for pushing the main cylinder, but a high-pressure energy accumulator is arranged for acting when a motor fails so that the volume of the system is increased, oil paths are increased, the system becomes complicated, and meanwhile, the high-pressure energy accumulator can bring certain potential safety hazards to the system; the brake system with the combined line control and power assisting functions and the manpower amplifying function, disclosed as CN201520180279, adopts a hydraulic main cylinder to amplify manpower, and adds an oil way and an electromagnetic valve to make the system complicated; a novel full-decoupling electronic hydraulic power-assisted brake system with the publication number CN201610265555 adopts a worm gear and worm and gear rack mechanism to change the rotary motion of a motor into linear motion, and the mechanism structure is complex. The motor is used for self-locking, so that the power consumption and the reliability are lower than those of manual mechanical self-locking; CN201611037510 discloses an electronic control brake booster for a vehicle brake system, which adopts a motor to drive a pair of parallel shaft gears, and then transmits power to a screw nut to convert the rotary motion of the motor into linear motion. Space is saved, but the structure adopts motor self-locking, and power consumption and reliability are inferior to manual mechanical self-locking.
Disclosure of Invention
The invention provides an active three-safety-redundancy high-thrust electronic power-assisted brake actuator which can realize multiple functions of mechanical self-locking, mechanical braking, motor active braking, manual direct braking and the like.
The purpose of the invention is realized by the following technical scheme:
an active three-safety-margin high-thrust electronic power-assisted brake actuator is characterized in that an electronic hydraulic brake system where the actuator is located is shown in figure 1 and comprises a brake pedal, an Electronic Control Unit (ECU), the active three-safety-margin high-thrust electronic power-assisted brake actuator, a master cylinder liquid storage tank, a hydraulic master cylinder and a Hydraulic Control Unit (HCU). The brake pedal is hinged with a ball screw of the active three-safety-margin high-thrust electronic power-assisted brake actuator; the active three-safety-margin high-thrust electronic power-assisted brake actuator consists of a mechanical action part, a motor action part and a manpower direct action part, and is shown in figure 2; the Hydraulic Control Unit (HCU) part receives signals of a brake pedal sensor and satellite signals to drive a motor in an actuator; the force-bearing rod 306 of the actuator pushes the hydraulic master cylinder piston; the hydraulic main cylinder is connected with a Hydraulic Control Unit (HCU) through a hydraulic pipeline; the Hydraulic Control Unit (HCU) distributes hydraulic pressure from the master cylinder to the four wheel cylinders to perform braking.
The ball screw 101 of the mechanical action part of the active three-safety-margin high-thrust electronic power-assisted brake actuator is hinged to a brake pedal, the ball screw 101 is connected with a ball screw nut 102, a brake disc 103 is connected with the ball screw nut 102 through a screw, the brake disc 103 is connected with a spline head 104 through a spline, a nut 201 is connected with a screw nut sleeve 202 through a screw, an overrunning clutch 206 is installed on the screw nut sleeve, a pedal input large gear 207 is installed on the outer side of the overrunning clutch 206, the pedal input large gear 207 is in gear meshing with a small gear 208, the small gear 208 is installed on a gear shaft 210 through a flat key, a gear on the gear shaft 210 is in gear meshing with a first large gear 211, the first large gear 211 is installed on a motor rotor 301 in an interference mode, a sun gear 308 is fixedly connected with the motor rotor 301, the sun gear 308 is in gear meshing with.
A motor stator 303 and a stator seat 304 of a motor action part of the active three-safety-margin high-thrust electronic power-assisted brake actuator are connected through a flat key, a sun gear 308 is fixedly connected with a motor rotor 301, the sun gear 308 is meshed with a planet gear 309, and a planet carrier 310 is in splined connection with a trapezoidal nut 307.
The ball screw 101 of the manpower direct action part of the active three-safety-margin high-thrust electronic power-assisted brake actuator is hinged to a brake pedal, the ball screw 101 is connected with a ball screw nut 102, a brake disc 103 is connected with the ball screw nut 102 through screws, an end face bearing is installed between the brake disc 103 and a thrust pad 105, and the ball screw 101 is connected with a stress rod 306 through screws.
Due to the adoption of the technical scheme, the invention has the following advantages:
1. the active three-safety-margin high-thrust electronic power-assisted brake actuator has a mechanical self-locking function. When the motor acts, the motor presses down the main cylinder, and the invention utilizes mechanical self-locking instead of motor self-locking, so that the system is more firm and saves electricity. The specific process is as follows: the pedal mechanism has a lever ratio that amplifies the pedal force. The power is transmitted to the planetary gear train, and the planetary gear train has a speed reduction transmission ratio to amplify the pedal force. Under the action of the lever ratio and the planetary gear train speed reduction ratio, the initial pedal force is doubly amplified, and the motor shell can be directly locked, so that the mechanical self-locking function is realized.
2. The active three-safety-margin high-thrust electronic power-assisted brake actuator can achieve the effect of high thrust, and can meet the requirement of general braking conditions on braking force, reduce the use times of a motor and protect the motor by amplifying manpower through a lever ratio and a planetary gear train reduction ratio.
3. The active three-safety-margin high-thrust electronic power-assisted brake actuator has three safety margins: mechanical action and manpower amplification mechanical brake, motor action active brake and manpower direct action failure backup. Three safety margins are provided, and the reliability and the safety of the actuator are improved.
4. The Electronic Control Unit (ECU) of the active three-safety-margin high-thrust electronic power-assisted brake actuator can receive satellite signals and sensor signals, drive the motor of the brake execution part, and can emergently brake under dangerous conditions to guarantee personal safety.
Drawings
FIG. 1 is a diagram of an active three-safety-margin high-thrust electric power-assisted brake system.
Fig. 2 is a schematic structural view of an active three-safety-margin high-thrust electronic power-assisted brake actuator.
Fig. 3 and 3 are partial enlarged views of fig. 2.
In the figure, 1-a manual direct acting part, 101-a ball screw, 102-a ball screw nut, 103-a direct acting connecting disc, 104-a spline head, 105-a thrust pad, 106-a pressure spring, 2-a mechanical acting part, 201-a nut, 202-a screw nut sleeve, 203-a spring retainer, 204-a bearing retainer, 205-a box right end cover, 206-an overrunning clutch, 207-a pedal input gearwheel, 208-a pinion, 209-a bearing fixing plate, 210-a gear shaft, 211-a first gearwheel, 3-a motor acting part, 301-a motor rotor, 302-a shell middle part, 303-a motor stator, 304-a stator seat, 305-a screw, 306-a stress rod, 307-a trapezoidal nut, 308-a sun gear, 309-planet wheel, 310-output planet carrier, 311-ring gear end cover.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
An active three-safety-margin high-thrust electronic power-assisted brake actuator is an electronic hydraulic brake system of which the actuator is shown in figure 1 and comprises a brake pedal, an Electronic Control Unit (ECU), the active three-safety-margin high-thrust electronic power-assisted brake actuator, a master cylinder liquid storage tank, a hydraulic master cylinder and a Hydraulic Control Unit (HCU). The brake pedal is hinged with the active three-safety-margin high-thrust electronic power-assisted brake actuator and the ball screw; the active three-safety-margin high-thrust electronic power-assisted brake actuator consists of a mechanical action part, a motor action part and a manpower direct action part, and is shown in figure 2; an Electronic Control Unit (ECU) part receives a brake pedal sensor signal and a satellite signal to drive a motor in an actuator; the force-bearing rod 306 of the actuator pushes the hydraulic master cylinder piston; the hydraulic main cylinder is connected with a Hydraulic Control Unit (HCU) through a hydraulic pipeline; a Hydraulic Control Unit (HCU) distributes hydraulic pressure from a master cylinder to four wheels to perform brake application.
A ball screw 101 of a mechanical action part of an active three-safety-margin high-thrust electronic power-assisted brake actuator is hinged to a brake pedal, the ball screw 101 is connected with a ball screw nut 102, a brake disc 103 is connected with the ball screw nut 102 through a screw, the brake disc 103 is connected with a spline head 104 through a spline, a nut 201 is connected with a screw nut sleeve 202 through a screw, an overrunning clutch 206 is installed on the screw nut sleeve, a pedal input large gear 207 is installed on the outer side of the overrunning clutch 206, the pedal input large gear 207 is in gear meshing with a small gear 208, the small gear 208 is installed on a gear shaft 210 through a flat key, a gear on the gear shaft 210 is in gear meshing with a first large gear 211, the first large gear 211 is installed on a motor rotor 301 in an interference mode, a sun gear 308 is fixedly connected with the motor rotor 301, the sun gear 308 is in gear meshing.
A motor stator 303 and a stator seat 304 of a motor action part of an active three-safety-margin high-thrust electronic power-assisted brake actuator are connected by a flat key, a sun gear 308 is fixedly connected with a motor rotor 301, the sun gear 308 is meshed with a planet gear 309, and a planet carrier 310 is in splined connection with a trapezoidal nut 307.
A ball screw 101 of a manpower direct action part of an active three-safety-margin large-thrust electronic power-assisted brake actuator is hinged to a brake pedal, the ball screw 101 is connected with a ball screw nut 102, a brake disc 103 is connected with the ball screw nut 102 through screws, an end face bearing is installed between the brake disc 103 and a thrust pad 105, and the ball screw 101 is connected with a stress rod 306 through screws.
As shown in fig. 3, an active three-safety-margin high-thrust electronic power-assisted brake actuator has three safety margins, which are divided into a normal brake under the action of manpower and machinery, an active brake under the action of a motor and a failure backup brake under the action of manpower and direct action. Meanwhile, the actuator provided by the invention has a high-thrust effect, a mechanical self-locking function and a function of receiving satellite signals and sensor signals for emergency braking. Specific embodiments will now be described from the above-described functions of the active triple redundant high thrust electric assist brake actuator, respectively.
1. And (4) a mechanical self-locking function. When the motor acts, the motor presses down the main cylinder, and the invention utilizes mechanical self-locking instead of motor self-locking, so that the system is more firm and saves electricity. The specific process is as follows: the pedal mechanism has a lever ratio that amplifies the pedal force. The power is transmitted to the planetary gear train, and the planetary gear train has a speed reduction transmission ratio to amplify the pedal force. Under the action of the lever ratio and the planetary gear train speed reduction ratio, the initial pedal force is doubly amplified, and the motor shell can be directly locked, so that the mechanical self-locking function is realized.
2. The thrust has the characteristics of high thrust: the lever ratio and the reduction ratio of the planetary gear train are used for amplifying manpower, so that the requirement of the general braking condition on the braking force can be met, the use times of the motor is reduced, and the motor is protected.
3. Three safety margins
(1) Mechanical action manpower amplifies mechanical braking brake: the pedal mechanism has a lever ratio that amplifies the pedal force. The pedal is connected with a ball screw (101), and the ball screw (101) transmits power to a gear on a pedal input large gear (207), a small gear (208) and a gear shaft (210) and a first large gear (211) parallel shaft gear mechanism through an overrunning clutch (206). Then the power is transmitted to the motor rotor (301), and then the power is transmitted to a sun gear (308) of the planetary gear train. Power is input from the sun gear (308), output from the planet carrier (310), and the planet carrier is provided with a trapezoidal nut (307). The trapezoidal nut (307) rotates to drive the trapezoidal screw rod (305) to move linearly, and the trapezoidal screw rod (305) is provided with a spline for guiding. The trapezoidal screw rod (305) moves to push the stress rod (306) to compress the hydraulic master cylinder. The master cylinder is connected with a Hydraulic Control Unit (HCU) through an oil pipe, and hydraulic pressure is distributed to wheel cylinders of four wheels through the Hydraulic Control Unit (HCU), so that manual braking is performed.
(2) The motor acts on active braking: the motor rotor (301) and the motor stator (303) receive signals sent by a Hydraulic Control Unit (HCU), the motor rotor (301) starts to rotate, power is input through a sun gear (308) of a planetary gear train, and a planetary carrier (310) outputs the power. A trapezoidal nut (307) is arranged on the planet carrier, the trapezoidal nut (307) rotates to drive the trapezoidal screw rod (305) to move linearly, and a spline is arranged on the trapezoidal screw rod (305) to guide. The trapezoidal screw rod (305) moves to push the stress rod (306) to compress the hydraulic master cylinder. The master cylinder is connected with a Hydraulic Control Unit (HCU) through an oil pipe, and hydraulic pressure is distributed to four wheel cylinders through the HCU, so that active braking is performed.
(3) Manual direct action failure backup: when the motor is powered off and the mechanical action part is blocked, the manual force can be directly braked under the action of the stress rod (306), and the backup function of failure is realized. The specific process is as follows: when the driver meets the emergency situation that the motor is powered off and the mechanical action part is blocked, the driver forcibly steps on the pedal. At the moment, due to the increase of manpower, the spring force generated by the rigidity of the pressure spring (106) is smaller than that of the manpower, so that the pressure spring is compressed. When the compression amount of the compression spring is larger than the length of the spline, the manual force generated when the spline between the brake connecting disc (103) and the spline head (104) is disconnected cannot be transmitted to a mechanical action part and directly acts on the stress rod (306). The push stress rod (306) compresses a hydraulic main cylinder, the main cylinder is connected with a Hydraulic Control Unit (HCU) through an oil pipe, and hydraulic pressure is distributed to four wheel cylinders through the Hydraulic Control Unit (HCU), so that manual direct-acting brake is performed.
And 4, the ECU receives the satellite signals and the sensor signals, drives a motor of the brake execution part, and can emergently brake the brake in a dangerous condition.
Claims (6)
1. The utility model provides an active three safe margins big thrust electronic helping hand brake executor, a serial communication port, active three safe margins big thrust electronic helping hand brake executor comprises manpower direct action part (1), mechanical action part (2), motor action part (3), wherein manpower direct action part (1) includes ball (101), ball nut (102), brake disc (103), spline head (104), thrust pad (105), pressure spring (106), mechanical action part (2) are including nut (201), lead screw nut cover (202), spring retainer ring (203), bearing retainer ring (204), box right-hand member lid (205), freewheel clutch (206), footboard input gear wheel (207), pinion (208), bearing fixing plate (209), gear shaft (210), first gear wheel (211), motor action part (3) are including motor rotor (301), The motor comprises a shell middle part (302), a motor stator (303), a stator seat (304), a trapezoidal screw rod (305), a stress rod (306), a trapezoidal nut (307), a sun gear (308), a planet gear (309), a planet carrier (310) and an inner gear ring end cover (311); the electronic hydraulic brake system where the active three-safety-margin high-thrust electronic power-assisted brake actuator is located comprises a brake pedal, an Electronic Control Unit (ECU), the active three-safety-margin high-thrust electronic power-assisted brake actuator, a master cylinder liquid storage tank, a hydraulic master cylinder and a Hydraulic Control Unit (HCU);
a ball screw (101) of a manpower direct action part (1) of the active three-safety-margin high-thrust electronic power-assisted brake actuator is hinged to a brake pedal, the ball screw (101) is connected with a ball screw nut (102), a brake disc (103) is connected with the ball screw nut (102) through screws, an end face bearing is installed between the brake disc (103) and a thrust pad (105), the brake disc (103) is connected with a spline head (104) through a spline, a pressure spring (106) is installed between the thrust pad (105) and a screw nut sleeve (202), and the ball screw (101) is connected with a stress rod (306) through screws;
a nut (201) of a mechanical action part (2) of an active three-safety-margin high-thrust electronic power-assisted brake actuator is connected with a lead screw nut sleeve (202) through a screw, a spring retainer ring (203) is installed in a ring groove of the lead screw nut sleeve (202), a bearing retainer ring (204) is connected with a right end cover (205) of a box body through a screw, an overrunning clutch (206) is installed on the lead screw nut sleeve, a pedal input large gear (207) is installed on the outer side of the overrunning clutch (206), the pedal input large gear (207) is in gear engagement with a small gear (208), a bearing fixing plate (209) is installed on a stator seat (304) through a screw, the small gear (208) is installed on a gear shaft (210) through a flat key, a gear on the gear shaft (210) is in gear engagement with a first large gear (211), and the first large gear (211) is installed;
a motor stator (303) of a motor action part (3) of the active three-safety-margin high-thrust electronic power-assisted brake actuator is connected with a stator seat (304) through a flat key, a sun gear (308) is fixedly connected with a motor rotor (301), the middle part (302) of a shell is fixedly connected with an inner gear ring end cover (311), a trapezoidal screw rod (305) is connected with a trapezoidal nut (307) through threads, the sun gear (308) is meshed with a planet gear (309), and a planet carrier (310) is in splined connection with the trapezoidal nut (307);
the Electronic Control Unit (ECU) part receives a brake pedal sensor signal and a satellite signal to drive a motor in the active three-safety-margin high-thrust electronic power-assisted brake actuator; a stress rod (306) of the active three-safety-margin high-thrust electronic power-assisted brake actuator pushes a hydraulic main cylinder piston; the hydraulic main cylinder is connected with a Hydraulic Control Unit (HCU) through a hydraulic pipeline; the Hydraulic Control Unit (HCU) distributes hydraulic pressure from the hydraulic master cylinder to the four wheel cylinders for braking.
2. The active three-safety-margin high-thrust electronic power-assisted brake actuator according to claim 1, wherein the actuator has a mechanical self-locking function, and the specific process is as follows: when a foot steps on the pedal, the pedal mechanism has a lever ratio to amplify the pedal force for one time; the pedal mechanism pushes the ball screw (101) to do linear motion, the linear motion is converted into rotary motion through the ball screw nut (102), pedal force is further amplified through the overrunning clutch (206), the pedal input large gear (207), the small gear (208), the gear shaft (210) and the first large gear (211), and acts on the motor rotor (301); meanwhile, when the stepping action is kept unchanged, the force which is reacted by the hydraulic main cylinder to the stress rod (306) is reduced by the trapezoidal nut (307), the planet carrier (310), the planet wheel (309) and the sun wheel (308) and then acts on the motor rotor (301); the acting force from the pedal and the reacting force of the hydraulic cylinder can be balanced mutually, so that the motor rotor (301) is kept stable and mechanical self-locking is realized.
3. An active three safety margin high thrust electric power assisted brake actuator according to claim 1, characterized by three safety margins: mechanical action and manpower are amplified, mechanical brake and motor action are used for active brake and manpower is directly used for failure backup, three safety margins are provided, and the reliability and safety of the actuator are improved.
4. An active three safety margins high thrust electronic assisting actuator according to claim 3, wherein the mechanical action manpower amplifying mechanical brake of one of the three safety margins is: the pedal is pedaled on the pedal, the pedal mechanism has a lever ratio, pedal force is amplified, and the specific process is as follows:
the pedal is connected with a ball screw (101), the ball screw (101) transmits power to a pedal input large gear (207), a small gear (208), a gear on a gear shaft (210) and a first large gear (211) parallel shaft gear mechanism through an overrunning clutch (206), then transmits the power to a motor rotor (301), and then transmits the power to a sun gear (308) of a planetary gear train, the power is input by the sun gear (308), a planet carrier (310) outputs the power, a trapezoidal nut (307) is arranged on the planet carrier, the trapezoidal nut (307) rotates to drive the trapezoidal screw (305) to move linearly, a spline is arranged on the trapezoidal screw (305) for guiding, the trapezoidal screw (305) moves to push a force receiving rod (306) to compress a hydraulic master cylinder, the hydraulic master cylinder is connected with a Hydraulic Control Unit (HCU) through an oil pipe, and the hydraulic pressure is distributed to wheel cylinders of four wheels through the Hydraulic Control Unit (HCU), thereby carrying out the manual braking brake.
5. An active three safety margins high thrust electric power assisted brake actuator according to claim 3, wherein the motor of one of the three safety margins functions as: the motor rotor (301) and the motor stator (303) receive signals sent by an Electronic Control Unit (ECU), the motor rotor (301) starts to rotate, power is input through a sun gear (308) of a planetary gear train, and a planetary carrier (310) outputs the power; the planet carrier is provided with a trapezoidal nut (307), the trapezoidal nut (307) rotates to drive a trapezoidal screw rod (305) to move linearly, the trapezoidal screw rod (305) is provided with a spline for guiding, the trapezoidal screw rod (305) moves to push a stress rod (306) to compress a hydraulic main cylinder, the main cylinder is connected with a Hydraulic Control Unit (HCU) through an oil pipe, and hydraulic pressure is distributed to four wheel cylinders through the Hydraulic Control Unit (HCU) so as to perform active braking.
6. An active three safety margins high thrust electric power assisted brake actuator according to claim 3, wherein the human direct acting failure backup of one of the three safety margins is: when a driver meets the emergency situation that a motor is powered off and a mechanical part is blocked, the driver forcibly steps on a pedal, at the moment, due to the increase of manpower, the spring force generated by the rigidity of a pressure spring (106) is smaller than the manpower, so that the pressure spring is compressed, when the compression amount of the pressure spring is larger than the length of a spline, splines between a brake disc (103) and a spline head (104) are mutually disconnected, the manpower cannot be transmitted to the mechanical action part and directly acts on a stress rod (306), the stress rod (306) is pushed to compress a hydraulic main cylinder, the main cylinder is connected with a Hydraulic Control Unit (HCU) through an oil pipe, and hydraulic pressure is distributed to four wheel cylinders through the Hydraulic Control Unit (HCU), so that the brake is directly acted by the manpower.
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| CN201710540336.0A CN107284431B (en) | 2017-07-05 | 2017-07-05 | Active three-safety-redundancy high-thrust electronic power-assisted brake actuator |
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| CN201710540336.0A CN107284431B (en) | 2017-07-05 | 2017-07-05 | Active three-safety-redundancy high-thrust electronic power-assisted brake actuator |
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| CN107806334B (en) * | 2017-12-08 | 2023-06-20 | 中山乐满石油设备有限公司 | Full wireless integrated type electric antifreezing regulation stop composite valve interval intelligent gas production system |
| CN111288094B (en) * | 2018-12-07 | 2021-05-25 | 上海汽车集团股份有限公司 | Electronic clutch and release system thereof |
| CN110341678A (en) * | 2019-07-30 | 2019-10-18 | 瑞立集团瑞安汽车零部件有限公司 | Integrated type electrical hydraulic braking power assisting device with planetary gear reducing mechanism |
| CN113027953A (en) * | 2021-04-02 | 2021-06-25 | 重庆理工大学 | Two wheeler drive-by-wire braking structure |
| CN113511177A (en) * | 2021-08-09 | 2021-10-19 | 吉林东光奥威汽车制动***有限公司 | Transmission device of electronic hydraulic brake boosting booster mechanism |
| CN114987420A (en) * | 2022-04-18 | 2022-09-02 | 江苏超力电器有限公司 | Line control actuating mechanism and redundancy control system |
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| CN104724097A (en) * | 2015-02-03 | 2015-06-24 | 北京航空航天大学 | Dual-motor drive-by-wire pressure sequence adjusting brake system |
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| FR3017173A1 (en) * | 2014-01-31 | 2015-08-07 | Bosch Gmbh Robert | TRANSMISSION DEVICE FOR CONTROLLING THE ORGANIZATION TRANSLATION MOTION AND BRAKE SYSTEM EQUIPPED WITH SUCH A TRANSMISSION DEVICE FORMING A SERVOFREIN |
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| CN102050107A (en) * | 2009-10-30 | 2011-05-11 | 日立汽车***株式会社 | Electric power assisting device |
| CN103950442A (en) * | 2014-04-14 | 2014-07-30 | 同济大学 | Lever fulcrum-adjustable mechanical electronic hydraulic brake system |
| CN104724097A (en) * | 2015-02-03 | 2015-06-24 | 北京航空航天大学 | Dual-motor drive-by-wire pressure sequence adjusting brake system |
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